#include <iostream>
using namespace std;
void f()
{
    cout << "Pets--->" << endl;
}
void g()
{
}
int cat, dog, bird, fish;
int main()
{
    int i, j, k;
    f();
    cout << "f(): " << &f << endl; //???
    cout << "g(): " << &g << endl;
    cout << "cat: " << &cat << endl;
    cout << "dog: " << &dog << endl;
    cout << "bird: " << &bird << endl;
    cout << "fish: " << &fish << endl;
    cout << "i: " << &i << endl;
    cout << "j: " << &j << endl;
    cout << "k: " << &k << endl;
}